X-Git-Url: https://git.cworth.org/git?p=ttt;a=blobdiff_plain;f=src%2Fx.c;h=c35f4c88955f3147271d86c1c3113140aeafb496;hp=1695374c8c72a3c6423a69b69d15728c575055ee;hb=95898262b4ce4a2a3d36f70a4e6cc8188decc142;hpb=2cd70db8433cc9d02a4ca784190260889c835198

diff --git a/src/x.c b/src/x.c
index 1695374..c35f4c8 100644
--- a/src/x.c
+++ b/src/x.c
@@ -19,9 +19,7 @@
  * Author: Carl Worth <carl@theworths.org>
  */
 
-#include "ttt.h"
-
-#include <stdarg.h>
+#include "x.h"
 
 void
 xasprintf (char **strp, const char *fmt, ...)
@@ -119,6 +117,22 @@ xrealloc (void *ptr, size_t size)
     return ret;
 }
 
+FILE *
+xfopen (const char *path, const char *mode)
+{
+    FILE *ret;
+
+    ret = fopen (path, mode);
+
+    if (ret == NULL) {
+	fprintf (stderr, "Error: fopen of %s failed: %s. Aborting.\n",
+		 path, strerror (errno));
+	exit (1);
+    }
+
+    return ret;
+}
+
 FILE *
 xfdopen (int filedes, const char *mode)
 {
@@ -127,18 +141,35 @@ xfdopen (int filedes, const char *mode)
     ret = fdopen (filedes, mode);
 
     if (ret == NULL) {
-	fprintf (stderr, "Error: fdopen failed: %s. Aborting.\n", strerror (errno));
+	fprintf (stderr, "Error: fdopen failed: %s. Aborting.\n",
+		 strerror (errno));
 	exit (1);
     }
 
     return ret;
 }
 
+void
+xdup2 (int oldfd, int newfd)
+{
+    int ret;
+
+    ret = dup2 (oldfd, newfd);
+    if (ret == -1) {
+	printf ("Error: dup2 failed: %s. Aborting.\n",
+		strerror (errno));
+	exit (1);
+    }
+}
+
 char *
 xstrdup (const char *s)
 {
     char *ret;
 
+    if (s == NULL)
+	return NULL;
+
     ret = strdup (s);
 
     if (ret == NULL) {
@@ -190,6 +221,29 @@ xbind (int sockfd, const struct sockaddr *my_addr, socklen_t addrlen)
     }
 }
 
+ttt_status_t
+xconnect (int sockfd, const struct sockaddr *serv_addr, socklen_t addrlen)
+{
+    int ret;
+
+    ret = connect (sockfd, serv_addr, addrlen);
+    if (ret == -1) {
+	switch (errno) {
+	case ECONNREFUSED:
+	    return TTT_STATUS_CONNECTION_REFUSED;
+	case EHOSTUNREACH:
+	case ENETUNREACH:
+	    return TTT_STATUS_NETWORK_UNREACHABLE;
+	default:
+	fprintf (stderr, "Error: connect failed (errno = %d): %s. Aborting.\n",
+		 errno, strerror (errno));
+	exit (1);
+	}
+    }
+
+    return TTT_STATUS_SUCCESS;
+}
+
 void
 xlisten (int s, int backlog)
 {
@@ -236,3 +290,33 @@ xselect (int		 n,
 
     return ret;
 }
+
+ssize_t
+xread (int fd, void *buf, size_t count)
+{
+    int ret;
+
+    ret = read (fd, buf, count);
+    if (ret == -1) {
+	fprintf (stderr, "Error: read failed: %s. Aborting.\n",
+		 strerror (errno));
+	exit (1);
+    }
+
+    return ret;
+}
+
+ssize_t
+xwrite (int fd, const void *buf, size_t count)
+{
+    int ret;
+
+    ret = write (fd, buf, count);
+    if (ret == -1) {
+	fprintf (stderr, "Error: write failed: %s. Aborting.\n",
+		 strerror (errno));
+	exit (1);
+    }
+
+    return ret;
+}